1280422067 has 2 divisors, whose sum is σ = 1280422068. Its totient is φ = 1280422066.

The previous prime is 1280422063. The next prime is 1280422229. The reversal of 1280422067 is 7602240821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1280422067 - 2² = 1280422063 is a prime.

It is not a weakly prime, because it can be changed into another prime (1280422063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640211033 + 640211034.

It is an arithmetic number, because the mean of its divisors is an integer number (640211034).

Almost surely, 2^1280422067 is an apocalyptic number.

1280422067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280422067 is an equidigital number, since it uses as much as digits as its factorization.

1280422067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1280422067 is about 35782.9857194729. The cubic root of 1280422067 is about 1085.8863737421.

Adding to 1280422067 its reverse (7602240821), we get a palindrome (8882662888).

The spelling of 1280422067 in words is "one billion, two hundred eighty million, four hundred twenty-two thousand, sixty-seven".